Attachment 25292 Details for Bug 21487 – xorg-video-v4l patch

[patch] xorg-video-v4l patch

0001-Change-initial-offscreen-images-format-to-YUY2.patch (text/plain), 1.61 KB, created by Dmitry Gryazin on 2009-04-30 00:47:46 UTC

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Creator: Dmitry Gryazin

Created: 2009-04-30 00:47:46 UTC

Size: 1.61 KB

patch

obsolete

>From a334292b5d280935e0a09b40eb1482db32854188 Mon Sep 17 00:00:00 2001
>From: Dmitry Gryazin <gdu@mns.spb.ru>
>Date: Sat, 1 Nov 2008 11:01:17 +0300
>Subject: [PATCH] Change initial offscreen images format to YUY2.
>
>Trident hardware Scaler fails to scale video.
>It seems that something is wrong in this pipeline:
>
>videogradder -> backend hardware scaler -> video-display.
>
>Trident driver's hardware Scaler supports YUV format, but YUY2 palette.
>xvinfo out:
>....
>id:0x32595559 (YUY2)
>  guid: 59555932-0000-0010-8000-00aa00389b71
>  bits perpixel: 16
>  number of planes: 1
>  type: YUV (packed)
>
>I have found in V4L2 API specifications that it supports YUYV.
>(http://v4l2spec.bytesex.org/spec-single/v4l2.html)
>But the default initial format in TRIDENTInitOffscreenImages function
>is RV16. And it isn't supported by V4L video driver.
>Solution is trivial:
>Init ofscreen images by correct format in TRIDENTInitOffscreenImages function.
>
>Signed-off-by: Dmitry Gryazin <gdu@mns.spb.ru>
>Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
>---
> src/trident_video.c |    2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
>diff --git a/src/trident_video.c b/src/trident_video.c
>index 7b6fb10..87e56ec 100644
>--- a/src/trident_video.c
>+++ b/src/trident_video.c
>@@ -1132,7 +1132,7 @@ TRIDENTInitOffscreenImages(ScreenPtr pScreen)
>     if(!(offscreenImages = xalloc(sizeof(XF86OffscreenImageRec))))
> 	return;
> 
>-    offscreenImages[0].image = &Images[0];
>+    offscreenImages[0].image = &Images[2];
>     offscreenImages[0].flags = VIDEO_OVERLAID_IMAGES | 
> 			       VIDEO_CLIP_TO_VIEWPORT;
>     offscreenImages[0].alloc_surface = TRIDENTAllocateSurface;
>-- 
>1.5.6.5
>

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